<p>If both Stanford and Columbia are truly your dream schools, then I’d suggest applying Columbia ED and UChicago EA. Your chances at Columbia are theoretically higher and you’d also have the option to apply EA to other schools. </p>
<p>All in all, you have a pretty good chance! Great GPA and extra curricular activities, but your ACT is slightly lower than what these schools usually accept.</p>
<p>So, yeah, you’re competitive for these schools. I’d suggest retaking the ACT though.</p>